Aercap Holdings NV (AER) is undervalued and GATX Corp (GATX) is fairly valued.
Against our estimates of intrinsic value, AER trades at the wider discount: a margin of safety of +53%, against +2% for GATX.
Values as of the 22 Sept 2026 close.
Discounting its cash flows at 6.9% (average of 3 methods) values the shares at $309.00; the price of $144.22 is 53% below that value, and 84% of that value comes from beyond year five.
Leak Score 54/100 on 3 of 12 signals
Discounting its cash flows at 7.1% values the shares at $187.40; the price of $183.01 is 2% below that value, and 83% of that value comes from beyond year five.
Leak Score 0/100 on 3 of 12 signals
| Metric | AER | GATX |
|---|---|---|
| Verdict | Undervalued | Fairly valued |
| Price | $144.22 | $183.01 |
| Intrinsic value | $309.00 | $187.40 |
| Margin of safety | +53% | +2% |
| Leak Score | 54/100 (3/12) | 0/100 (3/12) |
| Market cap | $22.3B | $6.5B |
| Revenue growth, 5 years | 10.9% | 7.5% |
| Operating margin | 49.0% | 29.0% |
| Net margin | 45.0% | 17.6% |
| Return on equity | 18.7% | 13.3% |
| Debt to equity | 2.33 | 4.48 |
| P/E | 7.1x | 18.1x |
| Forward P/E | 7.9x | 16.2x |
| P/B | 1.2x | 2.3x |
| Dividend yield | 1.1% | 1.4% |